Version 4
SHEET 1 2812 1528
WIRE 2128 1152 1984 1152
WIRE 1984 1184 1984 1152
WIRE 1984 1184 1920 1184
WIRE 1984 1200 1984 1184
WIRE 2128 1216 2128 1152
WIRE 1920 1248 1840 1248
WIRE 1840 1264 1840 1248
WIRE 1840 1360 1840 1344
WIRE 1984 1360 1984 1296
WIRE 2128 1360 2128 1296
FLAG 2128 1360 0
FLAG 1984 1360 0
FLAG 1840 1360 0
FLAG 1840 1248 Ube
DATAFLAG 1920 1184 "round(Ic(Q1)*1000)/1000"
SYMBOL npn 1920 1200 R0
SYMATTR InstName Q1
SYMATTR Value 2N3055
SYMBOL voltage 2128 1200 R0
WINDOW 123 24 120 Left 2
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 6
SYMBOL current 1840 1344 M180
WINDOW 0 23 79 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 24 -24 Left 2
WINDOW 39 0 0 Left 0
SYMATTR InstName I1
SYMATTR Value 30m
SYMATTR Value2 AC 1
TEXT 1840 1008 Left 2 ;.ac dec 100 10 100Meg
TEXT 1840 1032 Left 2 !.meas AC fT FIND freq WHEN mag(Ic(Q1)/Ib(Q1))=1
TEXT 1840 928 Left 2 ;.step param Ib list 1m 3m 10m 30m
TEXT 1840 1072 Left 2 !.dc dec I1 0.1m 1 30